Synology DiskStation DS420+ 4-Bays – DS420+
DiskStation DS420+
Streamline your data management
Overview
Features
High performance NAS with SSD cache acceleration capability
Synology DS420+ is designed for IT enthusiasts and home users. Equipped with a 2-core processor and built-in M.2 NVMe 2280 SSD slots for cache acceleration, DS420+ is ideal for data sharing, video streaming, and photo indexing.
CPU
2-core 2.0 GHz, burst up to 2.9 GHz
Cache Acceleration
2 x built-in M.2 2280 NVMe SSD slots
Performance
Average 15% boost to computing-intensive applications1
Network
2 x 1GbE LAN ports
Boost performance with built-in SSD slots
DS420+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays.
Accelerate demanding applications
A more powerful CPU speeds up computing-intensive applications. The new 2-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.
Access and sync your files seamlessly
Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more
- Sync files on demand: Save the storage space and network bandwidth of your PC.
- Go back in time: Easily retrieve previous versions of your shared files.
- Back up your data: Protect your files as scheduled or in real-time.
Your personal entertainment and multimedia hub
Access multimedia content anytime, anywhere through an intuitive web-based interface.
Audio Station
Audio Station is your personal music center, designed to intelligently sort and organize your audio files, and stream to Google Cast enabled devices. Audio Station supports lossless formats to ensure pristine audio quality.
Synology Photos
Organize your photos intelligently with Moments, a modern, AI-enabled photo management application that lets you effortlessly preserve your precious memories. Learn more
Video Station
Video Station lets you easily manage and organize movies, TV shows, and home videos, and stream content to computers, smartphones, and media players.
Powered by Synology DiskStation Manager
DSM UI
Award-winning operating system with an intuitive user interface and powerful capabilities.
Snapshot Replication
Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Security
Secure data with comprehensive built-in security tools to protect your devices against evolving threats.
DiskStation DS420+
- 1 Status indicator
- 2 Drive status indicator
- 3 Drive tray lock
- 4 USB 3.0 port
- 5 Power button and indicator
- 6 Drive tray
- 7 1GbE RJ-45 port
- 8 Reset button
- 9 Power port
- 10 System fan
- 11 Kensington Security Slot
Detailed Tech Specification
Hardware Specs
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CPU
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CPU Model | Intel Celeron J4025 |
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| CPU Quantity | 1 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 2-core 2.0 (base) / 2.9 (burst) GHz | |
| Hardware Encryption Engine (AES-NI) | Yes | |
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Memory
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System Memory | 2 GB DDR4 non-ECC |
| Total Memory Slots | 1 | |
| Maximum Memory Capacity | 6 GB (2 GB + 4 GB) | |
| Notes |
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Storage
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Drive Bays | 4 |
| M.2 Drive Slots | 2 (NVMe) | |
| Compatible Drive Type* (See all supported drives) |
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| Hot Swappable Drive | Yes | |
| Notes | “Compatible drive type” indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. | |
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External Ports
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RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| USB 3.2 Gen 1 Port* | 2 | |
| Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. | |
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File System
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Internal Drives |
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| External Drives |
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| Notes | exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center. | |
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Appearance
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Size (Height x Width x Depth) | 166 mm x 199 mm x 223 mm |
| Weight | 2.18 kg | |
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Others
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System Fan | 92 mm x 92 mm x 2 pcs |
| Fan Speed Mode |
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| Brightness Adjustable Front LED Indicators | Yes | |
| Power Recovery | Yes | |
| Noise Level* | 19.8 dB(A) | |
| Scheduled Power On / Off | Yes | |
| Wake on LAN / WAN | Yes | |
| Power Supply Unit / Adapter | 90 W | |
| AC Input Power Voltage | 100V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption* | 28.30 W (Access) 8.45 W (HDD Hibernation) |
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| British Thermal Unit | 96.5 BTU/hr (Access) 28.81 BTU/hr (HDD Hibernation) |
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| Notes |
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Temperature
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Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
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Certification
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Warranty
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3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus | |
| Notes |
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Environment
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RoHS Compliant | |
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Packaging Content
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Optional Accessories
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| Notes | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. | |
Software Specs
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DSM Specifications
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| Maximum Single Volume Size* | 108 TB | |
| Maximum Internal Volume Number | 64 | |
| SSD Read / Write Cache (White Paper) | Yes | |
| SSD TRIM | Yes | |
| Supported RAID Type |
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| RAID Migration |
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| Volume Expansion with Larger HDDs |
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| Volume Expansion by Adding a HDD |
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| Global Hot Spare Supported RAID Type |
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| Notes |
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| File Protocol | SMB/AFP/NFS/FTP/WebDAV | |
| Maximum Concurrent SMB/AFP/FTP Connections | 500 | |
| Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 1,500 | |
| Windows Access Control List (ACL) Integration | Yes | |
| NFS Kerberos Authentication | Yes | |
| Notes |
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| Maximum Local User Accounts | 2,048 | |
| Maximum Local Groups | 256 | |
| Maximum Shared Folder | 512 | |
| Maximum Shared Folder Sync Tasks | 8 | |
| Hybrid Share Folder Number | 10 | |
| Notes | For more supported details, please check this article. | |
| Synology High Availability | Yes | |
| Syslog Events per Second | 800 | |
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Virtualization
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VMware vSphere with VAAI | Yes |
| Windows Server 2016 | Yes | |
| Windows Server 2019 | Yes | |
| Citrix Ready | Yes | |
| OpenStack | Yes | |
| Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | |
| Supported Browsers |
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| Supported Language | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文 | |
| Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. | |
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Add-on Packages view the complete package list
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Antivirus by McAfee (Trial)
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Yes | |
| Yes | ||
| Maximum Users | 1,000 | |
| Maximum Number of Concurrent Users | 50 | |
| Notes | When applicable, tested systems are configured with maximum memory and set to allow the maximum number of connections. | |
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Document Viewer
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Yes | |
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Download Station
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Maximum Concurrent Download Tasks | 80 |
| Maximum iSCSI Target Number | 128 | |
| Maximum LUN | 256 | |
| LUN Clone/Snapshot, Windows ODX | Yes | |
| Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | |
| Free Email Accounts | 5 (Licenses required for additional accounts) | |
| Maximum Number of Concurrent Users | 50 | |
| Maximum Server Performance | 936,000 emails per day, approx. 28GB | |
| Notes |
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| DLNA Compliance | Yes | |
| Facial Recognition | Yes | |
| Maximum Snapshots per Shared Folder | 1,024 | |
| Maximum of System Snapshots | 65,536 | |
| Maximum IP cam (Licenses required) | 25 (including 2 Free License) (see all supported IP cameras) | |
| Total FPS (H.264) | 750 FPS @ 720p (1280×720) 700 FPS @ 1080p (1920×1080) 350 FPS @ 3M (2048×1536) 240 FPS @ 5M (2591×1944) 120 FPS @ 4K (3840×2160) |
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| Total FPS (H.265) | 750 FPS @ 720p (1280×720) 750 FPS @ 1080p (1920×1080) 500 FPS @ 3M (2048×1536) 250 FPS @ 5M (2591×1944) 200 FPS @ 4K (3840×2160) |
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| Total FPS (MJPEG) | 450 FPS @ 720p (1280×720) 250 FPS @ 1080p (1920×1080) 160 FPS @ 3M (2048×1536) 130 FPS @ 5M (2591×1944) |
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| Notes |
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| Recommended Number of Concurrent Sync Clients | 350 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
| Recommended Number of Hosted Files | 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
| Notes |
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| Maximum Users | 600 | |
| Notes |
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| Yes | ||
| Recommended Virtual Machine Instances | 2 (Learn more) | |
| Recommended Virtual DSM Number (Licenses required) | 2 (including 1 Free License) | |
| Notes | The specifications vary depending on system configuration and memory size. | |
| Maximum Connections | 40 | |
Notes :
- Model specifications are subject to change without prior notice.
- The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
- The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
- If usage requirements exceed the specifications above, please contact our regional partners for professional advice.
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